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Exhaust pressure governor fail with pictures

Discussion in 'Volvo Forum' started by dorlia2, Sep 25, 2012.

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  1. Oct 2, 2012 #11
    Pablo-UA

    Pablo-UA Road Train Member

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    exactly) Btw I looked in EPG on FH and I see the gap visually the same
     
    Pablo-UA, Oct 2, 2012
    Pablo-UA, Oct 2, 2012
    #11
    bravoo67 Thanks this.
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  3. Oct 2, 2012 #12
    dorlia2

    dorlia2 Light Load Member

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    So even plugging the EPG airline is not gonna do any good. My question is how to modify the EPG so I can get rid of Idle EGR function but keep the exhaust brake part of it?
     
    dorlia2, Oct 2, 2012
    dorlia2, Oct 2, 2012
    #12
  4. Oct 2, 2012 #13
    dorlia2

    dorlia2 Light Load Member

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    The Air Valve Unit supplies three different air pressures - 33 psi (warmhold) 110 psi (exhaust brake) and 14 psi(idle EGR), and is controlled by 3 cables- 12v power supply(gray/black), EPG 2 control(gray/white), EPG 1 control(gray).
     
    dorlia2, Oct 2, 2012
    dorlia2, Oct 2, 2012
    #13
  5. Oct 2, 2012 #14
    Pablo-UA

    Pablo-UA Road Train Member

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    I do not block supply line, I block line from valve to EPG actuator
     
    Pablo-UA, Oct 2, 2012
    Pablo-UA, Oct 2, 2012
    #14
    dorlia2 Thanks this.
  7. Oct 2, 2012 #15
    dorlia2

    dorlia2 Light Load Member

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    But still I will lose the compression brake.
    Compression brake needs EPG to be closed to work properly?
     
    dorlia2, Oct 2, 2012
    dorlia2, Oct 2, 2012
    #15
  8. Oct 2, 2012 #16
    Pablo-UA

    Pablo-UA Road Train Member

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    EPG adds about 10% of brake torque only when jakes are on

    is your cruise working?
     
    Pablo-UA, Oct 2, 2012
    Pablo-UA, Oct 2, 2012
    #16
  9. Oct 2, 2012 #17
    dorlia2

    dorlia2 Light Load Member

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    Cruise is working. Don't get me wrong, my compression brake works without EPG (plugged not disconnected). My concern is if there will be any damage in the long run to the Compression brake system.
    Publication PV776-TSP180874
     
    dorlia2, Oct 2, 2012
    dorlia2, Oct 2, 2012
    #17
  10. Oct 3, 2012 #18
    Pablo-UA

    Pablo-UA Road Train Member

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    I sugest not
     
    Pablo-UA, Oct 3, 2012
    Pablo-UA, Oct 3, 2012
    #18
  11. Oct 11, 2012 #19
    dorlia2

    dorlia2 Light Load Member

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    Volvo compression brake doesn't work without EPG. Just tried it and it doesn't
     
    dorlia2, Oct 11, 2012
    dorlia2, Oct 11, 2012
    #19
  12. Oct 12, 2012 #20
    Pablo-UA

    Pablo-UA Road Train Member

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    yes, but with newer ECM only. Newer ECM got two horizontal connectors (on previouse D12D and D12C they were vertically located). This ECM was designed for twin coil injector unit. And this ECM is used with D13. This ECM is "smart" and disables jakes with EPG fail.
     
    Pablo-UA, Oct 12, 2012
    Pablo-UA, Oct 12, 2012
    #20
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